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Re: filmscanners: Shadows and Scanwit 2720s
At 12:37 PM 7/08/01 +0700, you wrote:
>I'm doing some trani scans which are underexposed [how dare I!] and having
>of a time digging out the detail in the shadows. This detail is also
>I have tried doing multiple passes -8 infact at 2700 dpi.
>I also have a tramline problem in these deep shadow areas. Are the censors
Sounds like dark noise from the CCD's, but could also be electronic
interference. It would be worth repositioning your scanner and its cables,
maybe even try a conditioned power supply, in case the noise is coming from
an external source, eg the monitor, cards in the PC, other
devices... Also, make sure the lamp opening (referred to below) is clear
and smoothly edged, ie no hairs or ragged bits of plastic forming.
>Software is Vuescan 7.1.7.
>Can you advice a tried and true method to rake out the goodies in the shadows
One thing you can try (but if you are down to dark noise it is unlikely to
help) - at the handle end of the slide holder, there is a rectangular
notched opening through which the Acer reads the lamp brightness & colour
before the scan. If you reduce the amount of light that gets through (eg
cut up a bit of neutral density gel) you may be able to tweak some more
Also, experiment with Vuescans Image Type setting - Image and Slide give
quite different results..
>Did a sharpness test on the Scanwit / 7.1.7 using Vuescans sharpening
>another test without sharpening. Without wins hands down. Sharpening is
>definitely softer than without. Strange
Very strange! I'm using 7.1.7/Scanwit also, but it works as
advertised. Are you using the grain reduction at the same time perhaps?